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Campbell, Howard W.; Irvine, A. Blair
(detail)
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1977 |
Feeding ecology of the West Indian manatee Trichechus manatus Linnaeus.
Aquaculture 12: 249-251.
–Brief summary of some available information on the diet of T. manatus in Florida, mostly taken from Hartman.
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Irvine, A. Blair; Campbell, Howard W.
(detail)
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1978 |
Aerial census of the West Indian manatee, Trichechus manatus, in the southeastern United States.
Jour. Mamm. 59(3): 613-617. 1 fig. Aug. 21, 1978.
–Repr. in Brownell & Ralls (1981: 17-21). Surveys in the winter and summer of 1976 located a maximum of 738 manatees in Florida and Georgia. Data are included on distribution in respect to temperature and salinity, number of young calves, and a possible spring calving season.
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Bachman, K. C.; Irvine, A. Blair
(detail)
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1979 |
Composition of milk from the Florida manatee, Trichechus manatus latirostris.
Comp. Biochem. Physiol. 62A: 873-878. 3 tabs. 3 figs.
–Reports that manatee milk is higher in lipid, protein, and salt content than bovine milk, but contains no lactose.
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Irvine, A. Blair; Neal, F. C.; Cardeilhac, Paul T.; Popp, James A.; White, Franklin H.; Jenkins, Robert L.
(detail)
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1980 |
Clinical observations on captive and free-ranging West Indian manatees, Trichechus manatus, in Florida.
Aquatic Mamms. 8(1): 2-10. 3 tabs. 2 figs. June 1980.
–Reports blood and urine values, skin lesions and bacterial infections, body lengths, weights, and weight changes in relation to temperature. Urine osmolarity varied with salinity; concludes that manatees may be able to drink salt water and concentrate urine.
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Campbell, Howard W.; Irvine, A. Blair
(detail)
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1981 |
Manatee mortality during the unusually cold winter of 1976-1977. In: R. L. Brownell, Jr., & K. Ralls (eds.), The West Indian manatee in Florida. Proceedings of a workshop held in Orlando, Florida 27-29 March 1978 (q.v.).
Tallahassee, Florida Dept. Nat. Res. (iv + 154): 86-91. 1 tab. 2 figs.
–Analyzes mortality during the coldest winter in Florida's history, based on 54 salvaged carcasses; 38 of these deaths were attributed to cold. Suggests that artificial warm-water sources north of manatees' historic range on the east coast may be diverting them from their usual southward wintertime movements, and that inadequacy or shutdown of these sources result in manatee deaths during severe winters.
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Irvine, A. Blair; Caffin, John E.; Kochman, Howard I.
(detail)
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1981 |
Aerial surveys for manatees and dolphins in western peninsular Florida (with notes on sightings of sea turtles and crocodiles).
Washington, D.C., U.S. Fish & Wildlife Service, Office of Biol. Services, FWS/OBS-80/50: vi + 21. 3 tabs. 4 figs. Apr. 1981.
–See Irvine, Caffin & Kochman (1982).
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Irvine, A. Blair; Odell, Daniel Keith; Campbell, Howard W.
(detail)
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1981 |
Manatee mortality in the southeastern United States from 1974 through 1977. In: R. L. Brownell, Jr., & K. Ralls (eds.), The West Indian manatee in Florida. Proceedings of a workshop held in Orlando, Florida 27-29 March 1978 (q.v.).
Tallahassee, Florida Dept. Nat. Res. (iv + 154): 67-75. 5 tabs. 1 fig.
–Describes the manatee carcass salvage program, and presents summaries of data on 185 carcasses salvaged in Florida, categorizing them by month and year of recovery, size, and cause of death (by month and by county). See also Beusse et al. (1981a).
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Irvine, A. Blair
(detail)
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1982 |
West Indian manatee. In: D. E. Davis (ed.), CRC handbook of census methods for terrestrial vertebrates.
Boca Raton (Florida), CRC Press (397 pp.): 241-242.
–Outlines aerial survey techniques suitable for manatees.
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Irvine, A. Blair; Caffin, John E. Kochman, Howard I.
(detail)
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1982 |
Aerial surveys for manatees and dolphins in western peninsular Florida.
Fish. Bull. 80(3): 621-630. 3 tabs. 3 figs.
–A revised and slightly abridged version of Irvine, Caffin & Kochman (1981). Surveys from Hernando to Monroe counties, July-December 1979, resulted in 554 manatee sightings. Group sizes, numbers of calves, and distribution with respect to habitat type and salinity are tabulated. No clear evidence for seasonal movements or reproductive trends was obtained.
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Irvine, A. Blair
(detail)
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1983 |
Manatee metabolism and its influence on distribution in Florida.
Biol. Conserv. 25(4): 315-334. 1 tab. 4 figs. Apr. 1983.
–The metabolic rates of 3 captive T. manatus were studied in relation to air and water temperature; rates were 15-22% of predicted values, and thermal conductances 117-229%. Body temperature averaged 36.4° C. Concludes that Florida is marginal habitat for manatees; 20° C is probably the minimum water temperature suitable for them.
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Irvine, A. Blair; Scott, Michael D.
(detail)
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1984 |
Development and use of marking techniques to study manatees in Florida.
Florida Scientist 47(1): 12-26. 2 tabs. 2 figs.
–Reports results of experiments with paint, freezebrands, spaghetti tags, peduncle straps, suture attachments, and sonic and radio tags. Data are given on dive times and manatee movements from telemetry; the maximum dive time recorded was 31 min. 5 sec.
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